TatoebaCC BY 2.0 FR和音声英音声一度習慣が身につけば、それはわれわれに対してほとんど強制的な力を持つ。英語の訳Once a habit has been acquired, it almost has compulsive power over us.出典: Tatoeba文番号 190299
事情変更の原則じじょうへんこうのげんそく法律clausula rebus sic stantibus (legal principle that agreements become non-binding if there is a major, unforeseeable change of circumstances)